Eventually my wife became pregnant; we were very happy. But as
the pregnancy progressed, my wife gradually became less nimble and
the cat viewed this as requiring quick and decisive territorial
aggression. My wife started to feel uncomfortable around the cat.

My decision was made. It wouldn't be right to bring a new baby home
to an environment that posed such a threat. The cat lived in the
basement until the veterinarian's office was open, and then I made
the appointment to have the cat euthanized.